* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
a {
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}
.clearfix::after {
  content: '';
  display: block;
  clear: both;
}
.fl {
  float: left;
}
.fr {
  float: right;
}


.container{
    width: 100%;
    height: 300px;
    background-color: lightblue;
    position: relative;
}

.container .topbar{
    width: 100%;
    height: 20%;
    background-color: rgba(255, 255, 255, .4);
    position: absolute;
    top: 0;
    left: 0;
}

.container .topbar .logo{
    width: 100px;
    height: 100px;
    background-color: rgba(255, 255, 255, .4);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

